MAX3442EASA+T

Overview

The MAX3442EASA+T is a half-duplex RS-485 transceiver in an 8-pin SO package. It operates from a +4.75V to +5.25V supply and supports data rates up to 250kbps with enhanced slew-rate limiting. The device features ±15kV ESD protection on A/B pins, ±60V fault protection, and true fail-safe inputs that guarantee a logic-high receiver output when inputs are open or shorted. Hot-swap circuitry prevents false transitions during bus connection. It includes low-power shutdown mode consuming 20µA maximum and thermal shutdown protection.

Feature Summary

• ±60V Fault Protection
• True Fail-Safe Receiver Inputs
• Hot-Swap Capability
• Low-Power Shutdown Mode

Applications

• RS-485 Communications
• Industrial Networks
• HVAC Controls

Procurement Notes

Verify the exact ordering suffix against official manufacturer documentation to confirm package type and temperature range specifications. Ensure the component matches the required RoHS compliance status for your assembly process. Cross-reference the datasheet revision date to validate all electrical parameters before finalizing procurement orders.

Selection Notes

Select this component for applications requiring robust fault protection and hot-swap capability on RS-485 buses. The enhanced slew-rate limiting makes it suitable for reducing EMI in noisy industrial environments. Verify that the 250kbps data rate meets system requirements, as higher-speed variants exist within the same family.

Part Context

This part belongs to the MAX3440E–MAX3444E family of fault-protected RS-485/J1708 transceivers manufactured by Analog Devices/Maxim Integrated. The 'E' suffix indicates an extended temperature range, while 'SA' specifies the 8-pin SOIC package rated for -40°C to +125°C operation. The '+' denotes lead-free/RoHS-compliant packaging.

Replacement Considerations

Publicly confirmed substitutes include MAX3440EASA+, MAX3441EASA+, MAX3443EASA+, and MAX3444EASA+. These parts share identical pinouts and core functionality but differ in data rate capabilities and specific enable/shutdown configurations.